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Finding the Fourth Proportional to 52,809.98, 72,880.56 and 28,937.66

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Solution

The fourth proportional to 52,809.98, 72,880.56 and 28,937.66 is: 39,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,809.98 : 72,880.56 = 28,937.66 : x
  2. Step 2: Convert to fraction form
    52,809.98/72,880.56 = 28,937.66/x
  3. Step 3: Cross multiply
    52,809.98x = 72,880.56 × 28,937.66
  4. Step 4: Simplify right side
    52,809.98x = 2,108,992,501.49
  5. Step 5: Solve for x
    x = 2,108,992,501.49/52,809.98
  6. Step 6: Final answer
    x = 39,935.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.